1st.—Signal Rockets. 2nd.—Congreve Rockets. (Vide [Part VI].)
SIGNAL ROCKETS.
Signal rockets are of two natures—viz., 1 lb. and ½ lb. Rockets. They are fired from a tube, the ignition being effected by means of a percussion tube.
| Composition. | |
| lb. | |
| Saltpetre, pulverized | 4 |
| Sulphur, sublimed | 1 |
| Dog-wood charcoal | 1½ |
| Composition for Stars of Rockets. | |||
| lb. | |||
| Saltpetre, pulverized | 8 | Isinglass | 3 oz. 8 drs. |
| Antimony, pounded | 2 | Vinegar | 1 quart. |
| Cylinder mealed powder | 1 | Spirits of Wine | 1 pint. |
| Sulphur, sublimed | 2 | ||
The head of a 1 lb. rocket contains 36 stars, and that of the ½ lb. rocket 24 stars.
SHELLS.
Shells are hollow iron Shot, and are of various descriptions, viz.:—
1st.—The Common shell, with one fuze hole, used in the attack and defence of fortresses, &c., against shipping, and troops.